Improvement in spike-augers



STATES NTE PATENT GEEIcE.

ROLAND O. ARBOUR AND JOSEPH ARBOUR, OF BATON ROUGE, LOUISIANA.

IMPROVEMENT IN SPIKE-AUGERS.

Specification forming part of Letters Patent No. 146,798, dated January27, 1874; application tiled September 20, 1873.

To all whom t may concern:

Be it known that we, ROLAND O. ARBOUE and JOSEPH ARBOUR, of Baton Rouge,in the parish of East Baton Rouge, State of Louisiana,have invented anew and useful Improvement in Spike-Auger, of which the following is aspecication:

The invention will irst be fully described, and then pointed out in theclaim.

ln the annexed drawing, Figure l is mainly a longitudinal section of theauger and augerguide, (shown as applied to the plank,) the sec tionbeing taken on the line .r x of Fig. 2.' Fig. 2 is an end view of theauger. Fig. 3 is a view of an instrument used for punching the headofthe spike to make a foot-hold for the guide, and also for extractingthe guide fro 1n th e au ger Fi 4, an end view of the punch end of Fig.2:3. Fig. 5 shows the end of the spike (with the indentations made)surrounded by the auger.

Similar letters of reference indicate correspondin g parts.

A is the auger, which is fitted to a brace by means of the shank B. Inthe center of the au ger a longitudinal hole is bored, in the upper partof which is cut a screw-thread. O is the guide, it being a straight barof steel or iron, which is made to nicely lit the hole, and is providedwith a screw-thread to engage with the female screw of the auger, asseen in the drawing. rl`he outer end of this guide is provided Withpoints D, which engage with indentations in the head of the spikepreviouslyr i made with the punch E. F represents the spike, and G theplank through which the I spike has been driven. As seen in the drawing,the auger has penetrated about half-way through the plank. It will beseen that as the auger is revolved the guide O remains stationary, andthe auger will screw into it and cut an annular hole around the spike.the cutting-lips of the auger. The points D of the guide being embeddedin the head of the spike, the auger is pressed against the woodsuiiiciently to keep the guide in place. When the auger has passedthrough the plank it is removed, and-then the guide is hidden in theauger, and is extracted by applying the end I of the punch, Fig. 3,which acts as a plug-wrench on the spurs D, and turns the guide roundand unscrews it, when the operation may be repeated on another spike,and so on until the plank is released. This auger may be made of anysize, so as to suit any-sized spikes, and is a inost ingenious as wellas expeditious way to release the planks from a vessel in case ofrepairs or for other purposes.

Having thus described our invention, we claim as new and desire tosecure by Letters Patent- The combination, with the hollow auger, of theguide O, when all the parts are constructed,

arranged, and operated in the manner and for` the purpose specified.

Vitnesses GHAs. G. PAGES', JAMES DE GREY.

H H are'

